<button id="select-leak-toggle" (click)="toggle()">显示/隐藏</button>
<br />
<br />
<div *ngIf="show">
  <span>国家: </span>
  <ti-select id="select-leak" [options]="myOptions" [(ngModel)]="mySelected" placeholder="请选择国家"> </ti-select>
</div>
<br />
<p>选中项：{{mySelected | json}}</p>
<p>ti-drop个数：<input [(ngModel)]="dropLen" id="dropNumInput" /></p>
